linux-kernel - Re: [PATCH] leds: Add LED class driver for regulator driven LEDs.

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Message-ID: <20091202204121.GB18311@rakim.wolfsonmicro.main>
Date:	Wed, 2 Dec 2009 20:41:22 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Antonio Ospite <ospite@...denti.unina.it>
Cc:	Liam Girdwood <lrg@...mlogic.co.uk>,
	Richard Purdie <rpurdie@...ys.net>,
	Daniel Ribeiro <drwyrm@...il.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	openezx-devel@...ts.openezx.org
Subject: Re: [PATCH] leds: Add LED class driver for regulator driven LEDs.

On Wed, Dec 02, 2009 at 09:31:31PM +0100, Antonio Ospite wrote:
> Liam Girdwood <lrg@...mlogic.co.uk> wrote:

> > Some regulators may not support voltage change (via hw design or
> > constraints) so set_voltage() will fail. We probably want to handle this
> > regulator type so we don't call set_voltage().

> Ok, I'll read more about the regulator framework to find out how to
> check regulator capabilities.

Checking for errors when counting and listing the voltages ought to
cover this.
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